404523443537 has 2 divisors, whose sum is σ = 404523443538. Its totient is φ = 404523443536.

The previous prime is 404523443503. The next prime is 404523443557. The reversal of 404523443537 is 735344325404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228384586816 + 176138856721 = 477896^2 + 419689^2 .

It is a cyclic number.

It is not a de Polignac number, because 404523443537 - 2⁶ = 404523443473 is a prime.

It is not a weakly prime, because it can be changed into another prime (404523443557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202261721768 + 202261721769.

It is an arithmetic number, because the mean of its divisors is an integer number (202261721769).

Almost surely, 2^404523443537 is an apocalyptic number.

It is an amenable number.

404523443537 is a deficient number, since it is larger than the sum of its proper divisors (1).

404523443537 is an equidigital number, since it uses as much as digits as its factorization.

404523443537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 44.

The spelling of 404523443537 in words is "four hundred four billion, five hundred twenty-three million, four hundred forty-three thousand, five hundred thirty-seven".